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Thread: Replumbing question

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    el duderino's Avatar
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    Replumbing question

    I have had a lot of issues priming my single speed 1.5hp Pentair Whisperflo pump over the years and have had the inlets and outlets replumbed several times. The last plumber hard plumbed the pipes not leaving much (any) room to splice in again that I can see.

    I'm considering putting a union back on the outlet side to stop the leaking that is currently happening, but not sure how/where to splice in.

    Any suggestions are very welcomed!




    Our pool- (Completed March 2009)
    20k gallons, 38x15 Free Form Gunite (3.5'-8'), 26' Negative Edge and 7' Negative Edge spa with blower, Midnight Blue Diamondbrite, AquaLogic PS-8 control, Goldline Salt Chlorine Generator, 2x1.5hp Pentair 2 speed pumps, Pentair DE Filter, Pentair 400k BTU Heater, and BlackMaxPolaris 280 w/ Hayward booster pump, Pentair Prowler 920, DIY Stenner Chlorinator

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    el duderino's Avatar
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    Re: Replumbing question

    Ps, there is not a union there now. It is self bonding tape which I applied to attempt to slow/stop the leak. It did not work btw


    Our pool- (Completed March 2009)
    20k gallons, 38x15 Free Form Gunite (3.5'-8'), 26' Negative Edge and 7' Negative Edge spa with blower, Midnight Blue Diamondbrite, AquaLogic PS-8 control, Goldline Salt Chlorine Generator, 2x1.5hp Pentair 2 speed pumps, Pentair DE Filter, Pentair 400k BTU Heater, and BlackMaxPolaris 280 w/ Hayward booster pump, Pentair Prowler 920, DIY Stenner Chlorinator

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    Richard320's Avatar
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    Re: Replumbing question

    I can't tell from the picture whether the 3 way valve is connected with an internal or an external coupling. Those valves are dual-sized, so if it's internal, just saw it off at the valve and replace that whole L-shaped section. Put a larger coupling, then a reducer, and go. Or stay larger until after the elbow, then reduce at the pump.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Mod Squad Jimrahbe's Avatar
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    Re: Replumbing question

    el,

    I think it should be a crime to install pumps without pump unions...

    I'd install this basic type which has an O-Ring on the threaded side....



    I'd cut the pipe up near the valve where you have the most 2" pipe exposed..

    Thanks,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    el duderino's Avatar
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    Re: Replumbing question

    Quote Originally Posted by Richard320 View Post
    I can't tell from the picture whether the 3 way valve is connected with an internal or an external coupling. Those valves are dual-sized, so if it's internal, just saw it off at the valve and replace that whole L-shaped section. Put a larger coupling, then a reducer, and go. Or stay larger until after the elbow, then reduce at the pump.
    It's plumbed external on that part of the 3-way


    Our pool- (Completed March 2009)
    20k gallons, 38x15 Free Form Gunite (3.5'-8'), 26' Negative Edge and 7' Negative Edge spa with blower, Midnight Blue Diamondbrite, AquaLogic PS-8 control, Goldline Salt Chlorine Generator, 2x1.5hp Pentair 2 speed pumps, Pentair DE Filter, Pentair 400k BTU Heater, and BlackMaxPolaris 280 w/ Hayward booster pump, Pentair Prowler 920, DIY Stenner Chlorinator

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    el duderino's Avatar
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    Re: Replumbing question

    Quote Originally Posted by Jimrahbe View Post
    el,

    I think it should be a crime to install pumps without pump unions...

    I'd install this basic type which has an O-Ring on the threaded side....

    I'd cut the pipe up near the valve where you have the most 2" pipe exposed..

    Thanks,

    Jim R.
    Jim,

    I agree! I have some of those very unions on the way just not sure how I'm gonna make it work. I'm not sure there's enough 2" exposed to connect union.


    Our pool- (Completed March 2009)
    20k gallons, 38x15 Free Form Gunite (3.5'-8'), 26' Negative Edge and 7' Negative Edge spa with blower, Midnight Blue Diamondbrite, AquaLogic PS-8 control, Goldline Salt Chlorine Generator, 2x1.5hp Pentair 2 speed pumps, Pentair DE Filter, Pentair 400k BTU Heater, and BlackMaxPolaris 280 w/ Hayward booster pump, Pentair Prowler 920, DIY Stenner Chlorinator

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    el duderino's Avatar
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    Re: Replumbing question

    Would it be possible to cut out the reducer and go from there? I've never done that but heard it's possible.


    Our pool- (Completed March 2009)
    20k gallons, 38x15 Free Form Gunite (3.5'-8'), 26' Negative Edge and 7' Negative Edge spa with blower, Midnight Blue Diamondbrite, AquaLogic PS-8 control, Goldline Salt Chlorine Generator, 2x1.5hp Pentair 2 speed pumps, Pentair DE Filter, Pentair 400k BTU Heater, and BlackMaxPolaris 280 w/ Hayward booster pump, Pentair Prowler 920, DIY Stenner Chlorinator

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    Richard320's Avatar
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    Re: Replumbing question

    Quote Originally Posted by el duderino View Post
    It's plumbed external on that part of the 3-way
    If the plumber wasn't thorough about the primer and all, it might separate... Check out Removing PVC pipe from connectors/collars via burning glue or torch
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    borjis's Avatar
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    Re: Replumbing question

    Quote Originally Posted by Jimrahbe View Post
    el,

    I think it should be a crime to install pumps without pump unions...
    Jim I WHOLEHEARTEDLY AGREE!

    I've noticed, the last 2 big services I've had done (replaced multiport and heater) both
    service techs installed unions. (thank god!)

    I see a new pool build with no unions on the pumps or heater and think what the heck!?!

    I would insist on unions for a new build for sure.
    16x32 IG Vinyl, 13,000 Gals. Hayward S-244T sand filter, SP2810X15 pump
    (1.5 HP motor) Raypak PR266AEN (266k btu) gas heater. TF-100 Test Kit.
    Dolphin E10 Cleaning Robot.

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    el duderino's Avatar
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    Re: Replumbing question

    I also wonder if I cut as close to the valve as possible, if the internal connection would be open. I may need to go take some measurements.


    Our pool- (Completed March 2009)
    20k gallons, 38x15 Free Form Gunite (3.5'-8'), 26' Negative Edge and 7' Negative Edge spa with blower, Midnight Blue Diamondbrite, AquaLogic PS-8 control, Goldline Salt Chlorine Generator, 2x1.5hp Pentair 2 speed pumps, Pentair DE Filter, Pentair 400k BTU Heater, and BlackMaxPolaris 280 w/ Hayward booster pump, Pentair Prowler 920, DIY Stenner Chlorinator

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